Calibration fluid 35 ppt for salinity meter AZ 8371

[Axelf]

Hello everyone in my first thread.
I recently bought the AZ8371 salinity meter but in the manual I do not write anything to calibrate it. I compared the results with the refractometer calibrated with the 35ppt calibration fluid and I can see differences in the results. I would like to do such a liquid based on NaCl and distilled water myself, but I do not know what proportions to use. I know that Randy in his recipe used 36.5g of salt in less than a liter of water. Unfortunately, in this meter it does not work, because there is no refraction of light, only the measurement is based on TDS scaled for salinity PSU. Could someone advise me how to make liquid for my meter?
I attach a link to my meter https://www.az-instrument.com.tw/az-instrument/en/productsinfo/53.html

Best wishes

 

[TheEngineer]

Welcome to R2R!

Page 12 of the manual has the calibration procedure. You can use the standard from Randy's recipe or you can buy a little packet like this one: https://www.bulkreefsupply.com/neptune-systems-conductivity-calibration-solution-53-0-ms.html

 

[cromag27 Verified Sponsor]

Hello everyone in my first thread.
I recently bought the AZ8371 salinity meter but in the manual I do not write anything to calibrate it. I compared the results with the refractometer calibrated with the 35ppt calibration fluid and I can see differences in the results. I would like to do such a liquid based on NaCl and distilled water myself, but I do not know what proportions to use. I know that Randy in his recipe used 36.5g of salt in less than a liter of water. Unfortunately, in this meter it does not work, because there is no refraction of light, only the measurement is based on TDS scaled for salinity PSU. Could someone advise me how to make liquid for my meter?
I attach a link to my meter https://www.az-instrument.com.tw/az-instrument/en/productsinfo/53.html

Best wishes

just contact milwaukee instruments. they’ll send you bottles of test solutions.

 

[cromag27 Verified Sponsor]

 

[Axelf]

Can I use Randy calibration fluid for this device?
When I tried this fluid in display i saw 37.1ppt. Why?

 

[TheEngineer]

Can I use Randy calibration fluid for this device?
When I tried this fluid in display i saw 37.1ppt. Why?

Likely either the unit is out of calibration or your test fluid is off. Does the calibration solution read at 35ppt on your refractometer?

 

[Axelf]

Hmmm I have a problem because in Poland we don't have a other standards than Salifert 35 ppt 10ml. This bootle too small to check my meter;Blackeye

 

[Reef-junky]

just contact milwaukee instruments. they’ll send you bottles of test solutions.

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